Roofing Installation Articles

Is OSB Acceptable as Roof Decking for Metal Roofing?

April 3, 2017

Oriented Strand Board, commonly referred to as OSB, is a type of engineered lumber similar to particle board, formed by adding adhesives and then compressing layers of wood strands. OSB is widely used as roof decking material. A homeowner recently wrote and asked me the following regarding OSB roof decking: Q. We are checking into a metal roof and we have a question… ( read more )

#29 – Skylights on Metal Roofing

March 31, 2017

Normal types of protrusions through the roof such as skylights and chimneys do not pose a problem for metal roofs. They need to be flashed and detailed properly and quality metal roofing manufacturers will have instructions to help installers with that. Skylights must be curbed, not flush-mounted with any metal roof. If there are existing… ( read more )

#28 – Minimum Roof Pitch with Metal Roofing

Most residential metal roofs require at least a 3:12 roof pitch and have no maximum roof pitch. That means there is at least 3” of vertical rise to the roof slope for every 12” it goes back horizontally. That is a 14 degree angle. Mechanically seamed standing seam metal roofs, commonly used on large warehouses… ( read more )

Can Metal Roofs Be Installed Direct Over Old Shingles?

March 8, 2017

Q: Is it OK for metal roofing to be screwed down directly on top of asphalt shingles, without any wood or other material between the metal and shingle? A. You may wish to take a look at the videos in our Metal Roofing 101 video series … there may be some topics of interest to you. I… ( read more )

#24 – Using Foam Inserts with Metal Roofing

February 28, 2017

Metal shingle roofing offers unique beauty by providing depth and detail that is unmatched by other types of metal roofing. The formation of the products creates an air gap between the metal and the roof deck on a structure. That air gap is very beneficial as it becomes a thermal break to stop conductive heat… ( read more )

#9 – Valley Systems

February 21, 2017

If your home’s roof has valleys on it, it’s important to know how those valleys will be handled if you’re having a metal roof installed. Valleys occur on a roof when adjoining roof planes meet, usually at a right angle with an inside corner. If your home ever gets debris on the roof such as… ( read more )